Thanks, Mettra. I thought that was the case, concerning build time. Like you, I didn't bother with a stopwatch, although I also didn't want to waste the time with a replay timer (lazy

). Still, it seemed like the rate of building didn't accelerate because of multiple factories, other then the fact that you've got several ships getting built simultaneously. Individual contruction speed didn't improve. So thanks for confirming that. I can rest easy now, lol

As for Dune II, you could build several Vehicle factories, but you'd have to select each one to build your Trikes, Tanks, Launchers, etc. The Westwood Command and Conquer used faster build times by having more of the necessary buildings, and you could set the primary structure, although with enough buildings, the units could be coming out so fast that exiting units need to leave from an alternate site, but you couldn't build multiple units. You'd have to wait for the queue which had a delay, even with the sped up build time.
Here, in SoaSE, it uses the multiple factories for improved efficiency, in a similary fasion to Dune II, but here, you could simultaneously pump out units by selecting one factory, instead of jumping around to several factories.
So, while various RTS games implements a system of improved efficency by mass building structures, SoaSE does it in a way that differs from most of them, combining elements to make for an efficient system. Combine that with the Empire Tree, and you can be fleet building at one planet while half a galaxy away, and I can't think of any RTS that uses both of those elements, particularly the Empire Tree.